Results 71 to 80 of about 275,793 (312)
A Study on the Application of Computer Process Simulation Technology in Ammonia Synthesis
Chemical Engineering Transactions, 2017 A chemical process simulation software, AspenPlus, is applied to simulate the ammonia synthesis in the ammonia production process. A reasonable unit operating model is selected, and the RKS-BM thermodynamic method is adopted for calculations.
Fei Quan
doaj +1 more source
Sublattice asymmetry of impurity doping in graphene: A review [PDF]
, 2014 In this review we highlight recent theoretical and experimental work on sublattice asymmetric doping of impurities in graphene, with a focus on substitutional Nitrogen dopants.
Ferreira, Mauro S., Lawlor, James A.
core +2 more sources
The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Sciencen ...
openaire +1 more source
Receptor‐Free Identification of Toxic Gases Enabled by Hygroscopic Aqueous Salt Films
Advanced Functional Materials, EarlyView.Water as a gas sensor coating sounds impossible—until it stops evaporating. Here, hygroscopic salt solutions (LiCl, LiBr, H3PO4) form non‐drying aqueous films on CNT chemiresistors under ambient air. Gases partition into these liquid layers, sometimes transforming into water, and generate salt‐specific resistance fingerprints across a four‐channel ...
Seongwoo Lee +5 more
wiley +1 more source
International Journal of Electrochemical Science, 2015 Iron molybdenum nitride catalyst (Fe3Mo3N) was synthesised via a temperature-programmed reduction (TPR) of the corresponding precursor by flowing pure ammonia gas. The catalyst was characterised by x-ray diffraction (XRD) and scanning electron microscopy
Ibrahim A. Amar +3 more
doaj +1 more source
Ammonia-fed reversible protonic ceramic fuel cells with Ru-based catalyst
Communications Chemistry, 2021 Ammonia-fed protonic ceramic fuel cells could be a more sustainable alternative than their hydrogen-fed counterparts. In this work, the authors couple an reversible ammonia catalyst with a protonic ceramic electrochemical cell, enabling cracking of ...
Liangzhu Zhu +9 more
doaj +1 more source
Coating of upconversion nanoparticles with silica nanoshells of 5–250 nm thickness [PDF]
, 2019 A concept for the growth of silica shells with a thickness of 5–250 nm onto oleate-coated NaYF4:Yb3+/Er3+ upconversion nanoparticles (UCNP) is presented. The concept enables the precise adjustment of shell thicknesses for the preparation of thick-shelled
Graf, Christina +4 more
core +1 more source
The direct synthesis of ammonia [PDF]
Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1905 Abstract It was shown in a recent paper on “ The Decomposition of Ammonia by Heat,”* that ammonia is decomposed almost (if not quite) completely when heated in a porcelain vessel at about 800° to 1100°, and that there is no sign of equilibrium between the ammonia and its decomposition products at any of the temperatures employed, 677°
openaire +1 more source
Advanced Functional Materials, EarlyView.The citric acid/urea (CA‐Urea) precursor system offers a versatile, scalable route to carbon dots with tunable luminescence and multifunctionality. Mechanistic insights into precursor chemistry and reaction parameters have enabled doping, surface modification, and hybridization strategies, yielding CDs for luminescent devices, sensing, catalysis ...
Yupeng Liu +10 more
wiley +1 more source
Jurnal Ternak Tropika, 2017 This research was conducted to investigate the effect of flour and papaya leaf extract (Carica papaya L) on a mixed diet of napier grass (Pennisetum purpureum Schaum) and pollard (Triticumaestivum) to the concentration ammonia, Volatile Fatty Acids (VFA ...
Pipin Sairullah +2 more
doaj +1 more source